The Influence of Wind on Hydrodynamic Processes in Robbins Passage, Tasmania, Australia

Nguyen, Cuong Quang; Goodwin, Ian; Mortlock, Thomas; Gallop, Shari L.

doi:10.2112/si85-029.1

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, the higher biofouling coverage on the sporophytes at 1 m depth may have affected the performance as could drift seaweeds rubbed off on the growth lines near the surface (1 m), removing the kelp. Also, surface currents generated by wind (Nguyen et al 2018) may have removed sporophytes from the growth line before the holdfast developed enough for secure attachment. Similarly, Eisenia arborea cultivated in Baja California had fewer individuals at shallow (2-4 m) than deeper (7 -9 m) ropes (Zertuche-González et al 2022).…”

Section: At-sea Cultivation: Seasons and Depthsmentioning

confidence: 99%

A new nursery approach enhances at-sea performance in the kelp Lessonia corrugata

Nardelli,

Visch,

Farrington

et al. 2023

J Appl Phycol

View full text Add to dashboard Cite

We found that an innovative nursery approach, where Lessonia corrugata seeded spools were cultivated by spinning to increase the water motion relative to non-spinning spools, had higher growth in both the nursery and at-sea stages. Using this method, we compared the at-sea growth of sporophytes cultivated on spinning spools at different depths (1 m, 3 m, 5 m) and seasons (timing of out-planting). Finally, we compared the at-sea growth of sporophytes cultivated on spinning spools vs. non-spinning sporophytes at 3-m depth. In the nursery, sporophytes on spinning spools developed significantly faster than those on non-spinning spools: blade length was 4.6 and 2.5 cm, and holdfast area was 0.10 and 0.03 cm2 for spinning and non-spinning spools, respectively. At-sea L. corrugata in spring had significantly greater biomass production at 3 m and 5 m (3.0 kg m−1 and 2.4 kg m−1, respectively) and up to 96% survival. In summer, 100% of deployed kelps died at all depths. Growth was faster at 5 m (0.3 ± 0.06 kg m−1) in autumn and at 3 and 5 m (1.1 ± 0.1 kg m−1 and 0.8 ± 0.1 kg m−1, respectively) in winter. At sea, sporophytes from the spinning spools grew significantly 60% larger, and survival was ~ 3 times greater over 3 months than sporophytes from non-spinning. Overall, this study shows that spinning seeded spools in the nursery improves the growth at sea, spring is the best season for out-planting L. corrugata, and 3 or 5 m depth is best for production.

show abstract

Section: At-sea Cultivation: Seasons and Depthsmentioning

confidence: 99%

A new nursery approach enhances at-sea performance in the kelp Lessonia corrugata

Nardelli,

Visch,

Farrington

et al. 2023

J Appl Phycol

View full text Add to dashboard Cite

show abstract

“…In the literature [1,2], the simulation of sea bottom changes produced by a coastal defence structure are usually carried out by simulating the hydrodynamic fields and the concentration of the suspended solid particles. In the framework of coastal sediment transport, 3D models for the simulation of the hydrodynamic fields [3][4][5][6] require considerable computational time, due to the long-time scale of the sea bottom variations.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study over the Effects of a Designed Submerged Breakwater on the Coastal Sediment Transport in the Pescara Harbour (Italy)

Gallerano

Palleschi

Iele

2020

JMSE

View full text Add to dashboard Cite

In 1997, in front of the Pescara Harbour (Italy), a detached breakwater was constructed. In the successive years, the sediment transport due to the combined action of waves and coastal currents, in the area between the detached breakwater and the entrance of the Pescara Harbour, produced an accumulation of about 40,000 m 3 of sediment per year. In this paper, the causes of the accretion of the bottom elevation in front of the Pescara Harbour entrance and the effects produced by the existing detached breakwater are investigated. The effects on the sediment transport of the introduction of a new submerged breakwater designed to protect the entrance of the harbour from sediment siltation are investigated. In particular, the ability of the designed submerged breakwater, located orthogonally to the longshore current, to intercept the aforementioned solid material and to significantly reduce the accretion of the bottom in the area in front of the harbour entrance, was numerically verified. Numerical simulations were carried out by means of a model of the bottom-change composed of two sub-models: a two-dimensional phase resolving model that is used to calculate the fluid dynamic variables changing inside the wave period and a second sediment transport sub-model to simulate the bottom changes, in which the suspended sediment concentration is calculated by the wave-averaged advection–diffusion equation. The equations of motion, in which the vector and tensor quantities are expressed in Cartesian components, are written in a generalised curvilinear coordinate system. The fully nonlinear Boussinesq equations are written in an integral form and used to simulate the velocity fields.

show abstract

The Influence of Wind on Hydrodynamic Processes in Robbins Passage, Tasmania, Australia

Cited by 2 publications

References 0 publications

A new nursery approach enhances at-sea performance in the kelp Lessonia corrugata

A new nursery approach enhances at-sea performance in the kelp Lessonia corrugata

Numerical Study over the Effects of a Designed Submerged Breakwater on the Coastal Sediment Transport in the Pescara Harbour (Italy)

Contact Info

Product

Resources

About